Elastic-fluid turbine.



N 828, 9 34. PATENTED AUG. 21, 1906. G. W. DAKE.

. ELASTIC FLUID TURBINE.

APPLIOATION FILED NOV. 29, 1905.

2 SHEETS-SHEET 1.

$634 Arm/mud PATENTED AUG. 21, 1906. O. W. DAKE. ELASTIC FLUID TURBINE.

APPLIOATION FILED NOV. 29, 1905.

2 SHEETS-SHEET z.

ATTOR/VEKE' W T/VESSES:

UNITED STATES PATENT OFFICE.

CHARLES W. DAKE, OF GRAND RAPIDS, MICHIGAN.

ELASTIC-FLUID TURBINE.

No. e2e,es4.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application filed November 29,1905. Serial No. 289,660.

Improvements in Elastic-Fluid Turbines, of

which the following is a specification.

This invention relates to improvements in elastic-fluid turbine-engines, and more particularly to an important modification of the structure appearing in my application concurrent herewith, this change relating to the particular formation and relation of the guidepiasslages in the nozzle and guide-passage This improvement has for its object to provide means for more readily recurving and returning the flow of steam in the guide-passages as it pas es from the buckets on one side of the bloc to the buckets on the other si e.

I accomplish the objects of my invention by the devices and means described in thefol lowing specification.

The invention is clearly defined, and pointed out in the claims.

A structure embod ing the features of my invention is clearly illiistrated in the accompanying drawings, forming a part of this specification, in which I Figure 1 is a detail transverse sectional view, full size, through the buckets, guideblocks, casing, and casing-cover, taken on a line corresponding to irregular line 2 z of Fig. 3. Fig. 2 is a similar detail sectional view,

the casing-cover being omitted and only a portiono he casing being shown, taken on a ine correspondin to line 0000 of Fig. 3 and Fig. 3 is a detail side elevation view of one of the nozzle and guide pa'ssage blocks in position in the casing, the row of buckets 4 being removed to facilitate observation. The sectional views are taken looking toward the right of Fig. 3.

Similar numerals of reference refer tdsimilar parts throughout the several views.

Referrin to the numbered parts of the drawings, t 1e casing 1 is provided with an in let-passage 7, leading to an annular chamber 8, which delivers through to a nozzle 11. Buckets 12 and 14, formed in segments 4 and 5, are retained in the web 6 of the wheel, according to the plan claimed and described by me in another concurrent application.

passages 9 and 10.

The nozzle 11 delivers into buckets 12 and thence, traveling through the buckets 12, enters a passage 13 near the periphery of the turbine wheel. This passa e v 13 extends transversely, inwardly, and orwardly from the bucket 12, recurving upon itself to'deliver the steam therefrom in substantially the same direction from which it was received and delivering it to the inner'side of buckets 14, whence it passes through the the outer side of the buckets into the fluidpassage 15, which passage curves upon itself and extends inwardly, forwardly, and.ltransversely to the inner line of the buckets at a point in advance of'the nozzle 11. Thence it delivers into the inner side of the buckets again, reacting outwardly at the outer side, and enters an exit-passage 1'6 and 17, from whence it. asses to an annular exhaustchamber 18 in the'casing 1 and thence out at the exhaust.

The angle of each of these passages l 3 and 15 at the point of exit of the steam from the buckets. is substantially an acute angle of twentydegrees thereto, and where the pas sage passes through the block'3 and delivers to the opposite bucket'it delivers the steam thereto at an angle of substantially twenty degrees, so that the receiving and discharge ends of these passages stand 'substantialliv; at an angle. to each other in the plane of t eir action of about forty degrees, and they are curved upon themselves, so that in their tangential action upon the turbine-wheel the current of the steam is substantially reversed or turned upon itself, so that its impact uponthe buckets tends to drive the wheels always in the same direction. Extending the assage from the outer side to the inner si e of the buckets in this way is a reat convenience in formation, asthere is p enty of room for the steam to turn without bein unduly confined, the force of the steam not iein' retarded by too sharp an angle in the gui ingpassage.

Steam has been mentioned as the actuating fluid, but it is desired to remark that any elastic fluid under pressure will serve the purbuckets, developing its force by impact and by reaction, whence it passes outwardly from pose, and I do not intend to be confined to steam merely in this turbine. i

The guide-block 3 is secured to the casing 1 by suitable screws, as shown, and is properly curved to fit in between the segments 4 and 5 exit-passage through said guide-block from. t

ing the steam directly froinTthe buckets of the turbine.

further divided into se arate ieces P P I referred, or such passages might 'fers to the part generally and not to a specific therefrom; a guide-block with a suitable pas wardly, forwardly'and transversely through part of the'opposite group of buckets; and an therein suitably curved to receive impulse from the impact of the fluid and the reaction of the turbinewlieel. The annular exhaustpassage 18 delivers out from the engine at any convenient place and receives the steam from the exit-passages 17 at intervals around the wheel, as many of the blocks 3 being made use of as the size of the turbine and power to be developed requires. The exitpassage in the case 17 receives the steam from the exhaust-passage 16 in the nozzle and guide passage block, such. passage receiv- It isdesired to remark in the matter, of modification that the block 3 of course might be made integral with the other parts of the structure, or, for that matter, it might be which might contain the passages to which I have be formed by grooves between the parts. I merely mention thisso that when I refer to segment-block it will be understood that it reintegral lock.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is--- 1. In an elastic-fluid turbine, the cornbina posite sides thereof, with buckets formed therein suitably curved to receive impulse from the impact of the fluid and -the reaction sages therethrough,

sage therethrough terminating in a nozzle delivering into the innersides of said buckets;- and recurved guideassages from the outer periphery of said uckets, extending inwardly, forwardly and transversely, to guide the elastic fluid from. the buckets of one side to the buckets of the opposite side, and a second recurved. uide-passage leading from the outer part of t re second group of buckets inthe said guide-block to deliver into the inner exit-passage through said guide-block from the outer part of said buckets connecting with a suitable exitpassage to the exhaust, coacting for the purpose specified.

2,. In an elastic-fluid turbine, the combination with a suitable casing, of the turbine wheel. with bucket-segments 4 and 5 on opposite sides thereof, with. buckets formed therefrom a guide-block with a suitable pasthcr'cthrough terminating in a nozzle delivering into the inner sides of said buckets; and recnrved guide- )assages from the outer periphery of said buckets, extending inwardly, forwardly and transversely, to guide the elastic fluid from the buckets of one side to the buckets oi the opposite side; and an the outer part of said buckets connecting with a suitable exit-passage to the exhaust, coacting for the purpose specified.

3. In an elastic-fluid turbine,

having lines of buekets facin eachbther from the opposite sides of said disk, the buck ets beirw formed in the said wheel and facing each ot er and. curved to receive impulses from the impact pf the fluid and the reaction the combina tion in "a suitable casing, of a turbine-wheel therefrom; a guide-block with suitable pasdelivering into the inner sides of the said buckets; recurved guide-passages from the outer periphery of said buckets extending in-' wardly, forwardly and transversely to guide terminating in a "nozzle.

the elastic fluid from the buckets of one side to the buckets of the opposite side; a-secondreourvedguide-passage outer part of the second group of-buckets inwardly, forwardly and transversely through the said guides-block, to deliver to the inner part of the opposite exit-passage through said guide-block from the outer part of said blocks, connecting with a suitable exit-passage to the-exhaust, coacti'ng for the purpose specified. v

4. In an elastic-fluid turbine,- the combination in a suitable casing, of a turbine-wheel havin lines of buckets facin each other from the opposite sides of said disk, the buckets being formed in each other and. curved to receive impulses from the impact of the fluid and the reaction therefrom; a guide-block with suitable pas 'es therethrough, terminating in a nozzle ivering into the inner sides of said. buckets; recurved guide-passages from the outer periphery of said. buckets extending in wardly, forwardly and transversely to guide the elastic fluid from the buckets of one side to the buckets of the opposite side; and an leading I from the group of buckets; and an the. said wheel and facing exit-passage through said guide-block from the outer part of said blocks, connecting with tion of a suitable turbine-wheel havingoppo sitely-faced rows of buckets curved and."

formed to drive in the same direction; a nozzle delivering to one edge ofone of such rows of buckets; and recur'ved diagonal uide-passages between the oppositelydace buckets, as specified.

7. In an elastic-fluid turbine, the combine tion of a turbine-wheel with lines of oppoand transversely,

sitely-facing buckets formed to drive the wheel in the same direction; a guide-block having passages and nozzles arranged between the said oppositely-facing buckets, the nozzle delivering to one of said buckets; and a recurved guide-passage connecting the opposite side of said row of buckets, diagonally with the oppositely-faced row of buckets, coacting for the purpose specified.

8. In a turbine-engine, the combination of i the casing 1 with its cover 2, inlet-passage 7 with the annular chamber 8, guide-passage 9 and 10 reaching therefrom; the disk 6 oppositely-faced bucket-segments 4 and 5 with buckets 12 and 14 formed therein; the nozzle 11, delivering to the said buckets; the transverse, diagonally-recurved guide-passages 13 l and 15 through the guide-block and the exitpassage 16 and 16; and the annular exhausticihgmber 18, coacting for the purpose specie i 9. In a turbine-engine, the disk 6; oppositely-faced bucket-segments 4 and 5 with buckets 12 and 14 formed therein; the nozzle 11, delivering to the said buckets; the transverse', diagonally-recurve'd guide-passages 13 and 15 through the guide-block and the exitpassage, coacting for the purpose specified.

In witness whereof I have hereunto set my ,hand and seal in the presence of two witnesses.

CHARLES w. DAKE. 

